Compared with an incandescent bulb, a fluorescent tube uses about 80% less electrical power for the same amount of brightness.
A 150W incandescent can be replaced by a 30W tube. If it's on for 200 hours a month the saving is 200 x 120 watt-hours or 24 kilowatt-hours, saving about £3.60.
My light bills in Minneapolis, Minnesota is around $80.00/month in winter (I use gas heating) and $130.00/month in the summer (I must have my AC).
the average school is £300 a month
1900.00
it depends on the school
alot
My Balls
Measure the amount of growth, and or watch how much it grows each month
Beth saveed 5425 in five months each month she saved twice as much as she had the month before How much did she save in the second month Add 5425 together, or multiply 5425 by 2. You will have the answer you seek!
£80
not enough
$250.80
You don't pay by month you pay by year. It's £40 each year.